Granted Patent
Utility
US 4,988,298 · App. 07/299,078
Precision abutment base
Inventors:
Richard J. Lazzara, Keith D. Beaty
Patented Case
View Patent ↗
Granted: Jan 29, 1991
Filed: Jan 23, 1989
Inventors
Richard J. Lazzara
Keith D. Beaty
Assignee (at issue)
Implant Innovations, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.